diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2020-12-10 10:08:47 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-12-10 11:41:20 -0600 |
| commit | a2da5d8cc0b0ba637bdca8887f5ecc72f18c7e81 (patch) | |
| tree | c450baae028877176ea644734eb1ff43e8aed9e6 /drivers/pci/quirks.c | |
| parent | f8394f232b1eab649ce2df5c5f15b0e528c92091 (diff) | |
| download | linux-a2da5d8cc0b0ba637bdca8887f5ecc72f18c7e81.tar.gz | |
PCI: Mark AMD Raven iGPU ATS as broken in some platforms
Edgar reported [1] AMD Raven iGPU errors on several of his systems. There
is no root cause. Turn off ATS on these systems to avoid the issue.
[1] https://lore.kernel.org/linux-iommu/MWHPR10MB1310CDB6829DDCF5EA84A14689150@MWHPR10MB1310.namprd10.prod.outlook.com/
[bhelgaas: commit log]
Link: https://lore.kernel.org/r/MWHPR10MB131082779A86BE4CCCF190B789CB0@MWHPR10MB1310.namprd10.prod.outlook.com
Reported-by: Edgar Merger <Edgar.Merger@emerson.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index f70692ac79c56..02d0c1fa2f098 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -5164,6 +5164,18 @@ static void quirk_amd_harvest_no_ats(struct pci_dev *pdev) (pdev->device == 0x7340 && pdev->revision != 0xc5)) return; + if (pdev->device == 0x15d8) { + if (pdev->revision == 0xcf && + pdev->subsystem_vendor == 0xea50 && + (pdev->subsystem_device == 0xce19 || + pdev->subsystem_device == 0xcc10 || + pdev->subsystem_device == 0xcc08)) + goto no_ats; + else + return; + } + +no_ats: pci_info(pdev, "disabling ATS\n"); pdev->ats_cap = 0; } @@ -5176,6 +5188,8 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_amd_harvest_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7312, quirk_amd_harvest_no_ats); /* AMD Navi14 dGPU */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7340, quirk_amd_harvest_no_ats); +/* AMD Raven platform iGPU */ +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x15d8, quirk_amd_harvest_no_ats); #endif /* CONFIG_PCI_ATS */ /* Freescale PCIe doesn't support MSI in RC mode */ |